Minimist <= 1.2.5 - Prototype Pollution

2022-03-18 00:00

Strategic Overview

Status: Patched in 1.0.5
Affected Plugin: Insert Special Characters
Affected Version: <= 1.0.4
CVSS: 9.8Critical
Weakness type: CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
CVE: CVE pending

View all Insert Special Characters vulnerabilities

At a glance

This record tracks a critical-severity Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in the Insert Special Characters WordPress plugin, affecting versions <= 1.0.4. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.0.5; sites on affected versions should update now. Disclosed March 2022.

Vulnerability Overview

Minimist <=1.2.5 is vulnerable to Prototype Pollution via file index.js, function setKey() (lines 69-95). Fixed in 1.2.6. Some WordPress plugins and themes use this dependency though that doesn’t necessarily mean the plugin itself is vulnerable to exploitation.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

The product receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.

Remediation

Update to version 1.0.5, or a newer patched version

How does WordSec protect against this?

The fix is the thing that ends this: Insert Special Characters 1.0.5 closes this, and updating the plugin is the step that ends it.

Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1f714f97-5e1a-498a-9722-1e4bb883c5c7

Related records

Same weakness class

Other vulnerabilities in Insert Special Characters

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

This record contains material that is subject to copyright

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

https://www.cve.org/Legal/TermsOfUse

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/